Application Note

Laser Seam Welding Of Electronic Packages Using Galvo Scanners

Physik-Instrumente-Laser-Welding-Galvo-Scanner_01_aeed4e7236

For the safe and reliable operation of sensitive electronic components or assemblies, the components’ housing must be sealed hermetically to protect the microsystem from damage caused by contaminants seeping in. Using lasers for seam formation enables high welding speeds, as well as fine welding seams with narrow welding radiuses. Laser welding also avoids stressing the housing either thermally or mechanically.

One of the methods used in laser seam welding is to move the workpiece to be welded under a laser galvo scanner head. The galvo scanner provides numerous additional control features, for example, expanding the laser source’s effective fine spot size to the seam width, laying a complex welding pattern over the motion path to create high-quality welds, increasing throughput, and taking advantage of higher power laser sources. To help unleash the full potential of galvo scanners for laser seam welding, PI offers high-precision motion control solutions, including special software to simplify integrating galvo scanners and laser devices into motion platforms.

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